首页
登录
职称英语
Low speed bicycle crashes can badly injure—or even kill—children if they fal
Low speed bicycle crashes can badly injure—or even kill—children if they fal
游客
2023-07-22
73
管理
问题
Low speed bicycle crashes can badly injure—or even kill—children if they fall onto the ends of the handlebars. So a team of engineers is redesigning the humble handlebar in a bid to make it safer.
Kristy Arbogast, a bioengineer at the Children’s Hospital of Philadelphia in Pennsylvania, began the project with her colleagues after a study of serious abdominal injuries in children in the past 30 years showed that more than a third were caused by bicycle a accidents. "The task was to identify how the in juries occurred and come up with some countermeasures," she says.
By interviewing the children and their parents, Arbogast and her team were able to reconstruct many of the accidents and identified a common mechanism responsible for serious injuries. They discovered that most occur when children hit an obstacle at slow speed, causing them to topple over. To maintain their balance they turn the handlebars through 90 degrees—but their momentum forces them into the end of the handlebars. The bike then falls over and the other end of the handlebars hits the ground, ramming it into their abdomen.
The solution the group came up with is a handgrip fitted with a spring and damping system. The spring absorbs up to 50 per cent of the forces transmitted through the handlebars in an impact. The group hopes to commercialize the device, which should add only a few dollars to the cost of a bike. "But our task has been one of education because up until now, bicycle manufacturers were unaware of the problem, says Arbogast.
The team has also approached the US Consumer Product Safety Commission to try to persuade manufacturers to adopt the new design. A decision is expected later this year. [br] What is the biggest problems they faced?
选项
答案
Not easy to persuade manufacturers to adopt the new design.
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2859838.html
相关试题推荐
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
Childrenmodelthemselveslargelyontheirparents.Theydosomainlythroug
随机试题
Spaceisadangerousplace,notonlybecauseofmeteors(流星)butalsobecaus
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.
A.应进行专门的地震危险性分析 B.应进行地震基本烈度复核 C.应进行合成基
左边给定的是纸盒外表面的展开图,右边哪一项能由它折叠而成?请把它找出来。 A.
在社会安全稳定系统中,用来进行风险损失补偿的制度主要有( )。A.国家救济制度
图中的1、2杆材料相同,均为圆截面压杆,若使两杆的临界应力相等,则两杆的直径之比
既能祛风通络,又能杀虫解毒的是A.络石藤 B.雷公藤 C.桑枝 D.海桐皮
2×20年12月31日,甲公司以银行存款1200万元取得一项固定资产并立即投入使
矿业工程项目施工招标条件不需要()。A.立项批准 B.资金落实 C.设计图
灌溉分水闸施工中人工作业最高处距地面为18m,该作业为( )高处作业。A.一级
最新回复
(
0
)